Designates the locked stitch construction, which gives maximum wear and exceptionally high breaking strength. Serves a variety of purposes for all around the home and many other uses. 100' long. No. 218838: Size: No. 6, 3/16'' diameter, 66 ft./lb., break strength: 225 No. 218847: Size: No. 7, 7/32'' diameter, 55 ft./lb., break strength: 260 No. 218874: Size: No. 12, 3/8'' diameter, 20 ft./lb., break strength: 600